Physical developer.



A. HAMILTON.

PHYSIGAL DEVELOPER.

APPLICATION FILED APR. 28. 1911.

1,047,212, Patented Dec.17,1912.

ALEXANDER HAMILTON, OF EDISON, ILLINOIS.

PHYSICAL DEVELOPER.

Specification of Letters Patent.

Application filed. April 28, 1911.

Patented Dec. 17, 1912.

Serial No. 624,507.

To all whom it may concern:

Be it known that I, ALEXANDER HAMIL- TON, a citizen of the UnitedStates, residing at Edison, in the county of Cook and State of Illinois,have invented a new and useful Physical Developer, of which thefollowing is a specification.

My invention relates to a physical developer having a plurality ofweights of novel construction, and the objects of my improvements are:first, to develop different parts of the body; second, to vary theweight of the developer; third, to make the parts interchangeable;fourth, to make a cheap and durable device and other features to becomeapparent from the description to follow.

My invention is designed to develop the muscles of the neck, spine andlower limbs by placing the same upon the head and walking about. Othermuscles of the body are developed by placing the developer in a socketon the chest and walking about. The separate weights or parts of thedeveloper are provided with handles so that they can be used as handweights or dumb-bells, and detachable handles are provided to enable theseparate weights to be used as Indian-clubs.

To describe my invention so that those versed in the art to which itpertains can make and use the same, I have illustrated it on theaccompanying sheet of drawing forming a part of this specification, inwhich,-

Figure 1 is a side elevation of a developer embodying my inventionshowing it as used on the head; Fig. 2 is a similarv view showing it asused on the chest; Fig. 3 is an enlarged central sectional view of thesame; Fig. 4 is a perspective view of one weight detached; Fig. 5 is aperspective view of the same showing a handle attached to form anIndian-club.

Similar reference characters refer to similar parts throughout theseveral views.

The developer comprises a plurality of disk like weights 6, eachprovided with a central aperture 7, and a cross bar, 8, across thecenter of said aperture, 7 to serve as a handle. The opposed flatsurfaces of the disks, 6, are provided with registering depressions andprotuberances, 9, which pre vent the disks, 6, from moving out ofalinement. The lowermost disk, 10, is preferably provided with aspherical depression 11, to fit on the head of a person and with a screwthreaded concentric hole, 12, in its upper surface. A rod, 18, isthreaded into hole 12 and is arranged to pass loosely through holes 14:,provided .in the center of the handles 8, and holes 15 are provided inthe rod 13 so that a pin, 16, can be passed through the hole nearest thelowermost disk 6 and prevent the same from sliding off of rod 13 whenthe device is used in the position shown in Fig. 2. Each disk 6 isprovided with a hole, 17, near its peripheral edge to secure a handle,18, thereto by means of a bolt, 19, passing through said hole andregistering holes provided in the handle 18 as shown in Fig. 5.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent of the United States, is

1. In a device of the class described a plurality of suitable disks eachprovided with a central opening and a handle or cross bar extendingacross said opening a depression on one side of each disk and aprotuberance on the opposite side of each disk arranged to register whenthe disks are laid together.

2. In a device of the class described, a plurality of suitable diskseach provided with a central opening and a handle or cross bar extendingacross said opening, a depression on one side of each disk and aprotuberance on the opposite side of each disk arranged to register whenthe disks are laid together and a concave surface on the lowermost disk.

3. In a device of the class described, a plurality of suitable disksprovided with a central opening and a cross bar or handle extendingacross said opening, the lowermost disk provided with a concave bottomsurface and a concentric, screw threaded hole in its upper surface, eachdisk also name to this specification in presence of two provided with aconcentric perforation subscribing witnesses this 8rd day of Authroughthe cross bar and a rod having one gust, 1910, at Chicago, Illinois.

end screw-threaded to be threaded through ALEXANDER HAMILTON. 5 theperforations in said disks and secured Witnesses:

in the threaded hole in the lowermost disk. R. J. JAGKER,

In testimony whereof I have signed my CHARLES C. WHITSON.

Copies of this patent may be obtained for five 'cents each, byaddressing the Commissioner of Patents, Washington, D. G.

